Updated: May 25, 2023

Fleas are small, wingless insects that feed on the blood of mammals and birds. They are notorious for causing itching and other skin irritations in both pets and humans. Fleas can be a major nuisance in your home, and it is important to understand what attracts them to your living space so that you can take steps to prevent an infestation.

Warmth and Humidity

Fleas thrive in warm and humid environments, which is why they are most commonly found during the summer months. They prefer temperatures between 70 and 85 degrees Fahrenheit and humidity levels between 70 and 75%. This means that homes with higher temperatures and humidity levels are more likely to attract fleas.


One of the most common ways that fleas enter a home is through pets. Fleas feed on the blood of animals, and they can hitch a ride on your furry friend. Once they are in your home, they can quickly reproduce and spread throughout your living space. If you have pets, it is important to regularly check them for fleas and use flea prevention products.


Wildlife such as raccoons, squirrels, and opossums can also bring fleas into your home. These animals can carry fleas in their fur, and they may also leave behind fleas in their nesting areas. If you have wildlife in your yard or around your home, it is important to take steps to keep them away from your living space.


Fleas love cluttered areas because they provide plenty of hiding spots. Cluttered areas also tend to be darker and more humid, which creates an ideal environment for fleas to thrive. To prevent flea infestations, it is important to keep your living space clean and free of clutter.


Fleas need moisture to survive, which is why they are often found in damp areas such as basements and crawl spaces. If you have a moisture problem in your home, it is important to address it as soon as possible. This may involve repairing leaks, improving ventilation, or using a dehumidifier.

Human Presence

Believe it or not, humans can also attract fleas to their homes. Fleas are attracted to the carbon dioxide that humans exhale, which is why they tend to bite humans on the lower legs and feet. If you spend a lot of time in your yard or have frequent visitors to your home, you may be more likely to attract fleas.


Flea infestations can be frustrating and difficult to deal with. By understanding what attracts fleas to your home, you can take steps to prevent an infestation from occurring. This may involve keeping your living space clean and free of clutter, addressing moisture problems, and using flea prevention products on your pets. With the right precautions in place, you can enjoy a flea-free home all year round.